[pianotech] Weber Upright Pinblock

[Marc Lanthier (Piano Lanco)]

In my experience with silicone - nothing sticks to it. I would do a test
outside the piano first. Silicone is widely used as a mold release.
 

Marc Lanthier



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From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Al Guecia/AlliedPianoCraft
Sent: February 27, 2009 6:46 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] Weber Upright Pinblock


Why not just put a pinblock inlay in the effected area with Terry's ever
famous WSE. The epoxy should block the silicon migration.
 
Al
 
 

From: Dave Davis <mailto:dave at davispiano.com>  
Sent: Thursday, February 26, 2009 8:37 PM
To: pianotech at ptg.org 
Subject: Re: [pianotech] Weber Upright Pinblock

I started to suggest plugs, but thought the silicone might creep into the
plugs. A good epoxy/glue seal might seal the silicone out, though.

Didn't someone do a non-scientific glue adhesion to silicon-infected wood a
couple of months ago during the VSP discussion?



Best regards,
Dave Davis
Davis Piano Service
425-226-0102



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From: "Farrell" 
Date: Thu, 26 Feb 2009 19:59:11 -0500
To: <pianotech at ptg.org>
Subject: Re: [pianotech] Weber Upright Pinblock




"The only real cure is to remove the silicone, which would require removing
the pinblock."
 
Or, if the rest of the block seems good, maybe plugs in the affected areas.
 
Terry Farrell


----- Original Message ----- 
I ran across this phenomenon a few years ago. Phil Glenn, formerly with
Young Chang, told me that in the late 80's the drill bits YC used to
pre-drill for the pressure bar screws were changed to a slightly smaller
size. They later discovered that the guy putting the screws in put silicone
on the screws so he could drive them into the smaller hole. Consequently the
silicone creeped up the pinblock and typically the bottom row of holes of
those pianos would become loose. 
 
CA probably has the best chance of extending the tuning life of the Young
Chang-built Weber. Replacing the tuning pins or driving them deeper won't
help. The only real cure is to remove the silicone, which would require
removing the pinblock.

Best regards,
Dave Davis, RPT

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